Cement-stave machine



S. E. ANDERSON.

CEMENT STAVE MACHINE. APPLICATION FILED SEPT. 15. 1919.'

Patented July 13, 1920.

a SHEETS-SHEET 1;

' Zin/afar S. E. ANDERSON,

CEMENT STAVE MACHINE.

APPLICATION FILED SEPT. 15, |919.

Patented July 13, 1920.

3 SHEETS-SHEET 2.

Due/7 or S. E. ANDERSON.

CEMENT STAVE MACHINE.

APPLICATION man SEPT. 15, 1919.

Patented July 13, 1920.

' 3 SHEETS-SHEET 3.

SIGURD E. ANDERSON, or Dnsivioiiviis, iowa.

GEMENT-STAVE MACHINE.

Application filed September 15, 1919. Serial No. 323,982.

To all whom t may concern:

Be it known that I, VSistine E. ANDERSON, a citizen of the United States, and resident of Des Moines, in the county of Polk and State of Iowa, have invented a certain new and useful Cement-stave Machine, of which the following is a specification.

The object of my invention is to provide a cement stave machine of simple, durable and inexpensive construction.

More particularly it is my object to provide a machine of they class described adapted to be used in connection with a tamping machine, wherein means are provided for holding the parts of the molds rigid to prevent the impact of the tampersifrom moving .said parts to vary the size ofthe staves foi'mcd.

further object is to provide a cement stave machineV provided with movable mold members, whereby therstave may be formed and the mold members then moved to position Vaway from the stave to permitready removal of the stave. Y Still al further object is to'provide a machine having a pallet designed to be held in horizontal position when the stave is being formed, and adapted to be moved to inclined lposition when the mold,Y members arev separated for releasing the stave, whereby the pallet and the stave may bereadily slid off its supporting platform onto a truck or other means for carrying the stave vto a storage room. j Y f Still a further object of my invention lis to provide mold members designed to form the sides of the stave,v.vhich are so arranged that after the stave has been formed said members may be slid alongthe side of the stave to trowel the edges' thereof before the members are separated v,to Apermit the removal of the stave. p i

Still afurther object is to provide a pallet V'supporting platform comprising spaced angle irons which are pivoted to the rear upper portion of the machine'frame, and means for swinging the forward ends of the angle irons from horizontal to inclined position, said means being so arranged that they form a direct connection-between the angle irons and the foundationiipon which the frame restsjat the time that the stave is beingformedr r p Stillv afurther object is to provide a flexible brace extended across the lower part of the frame, to which levers or other mov-v able devices may be secured to `move the Specification of Letters Patent.

Patented July 13,

pallet supporting platform from horizontal to inclined position, or vice versa, so that that the staves formedby these machines are approximately ten inches across, and are used to form'the circular wallsof silos varying from twelve to eighteen feet in diameter, so that variation in size amounting to a very small fraction of an inch in each stavewill amount to a variation of one or more f inches in the completed structure. Concrete or cement staves are readily cracked Aby shearing stresses, so that it is important that there shall be no variation in the position of the staves in the various tiers inthe wall, or the hoops which hold the `staves .in .place are very likely to cause a shearing stress and thereby crack or break the cement of the staves.

The parts of my improvedA machine are Y therefore designed to formstaves with ,sub-

Vstantially no variation iii-size, and at-the saine time are designed to, withstand Vthe stresses and strains caused by the impact ofv tamping devices which are used when ythe stave isbeing formed. Y, n

It is also necessary that these staves be the product commercially successful,` so that ing the staves from the machine after they have been, formed.-

To solve these problemsiny Vmachine is' provided with positive means `for locking and centering themoldmembers by which Vthe ends and sides of the staves .are formed,

,are'in vertical alinementgwhen-the pallet is Vinvposition for forming staves,l,so that the Y i impact of a tamping device lis carried in straight lines down to the i'oundation upon `which the framerests.l i

lmade in large quantities linrorder .tok make a means must be providedl forreadilyrcmovy iool the movement of tliemold member 15 to any of its positions will not move the plate out from under the hopper to thereby allow its contents-to escape.

A stripV of metal 39 or other suitable material is supported vabove the frame Vmembers, 12 by means of the pins 23, in position to prevent vertical play of the mold members 15 and 16 to form a guide member adapted to coact with extending lugs 40 on the hopper` 36.

Secured to the strip 39adja'cent to the mold members is an angle iron having a vertical flange 40 and a horizontal flange 42. A pair of levers 43 are pivoted at 44, intermediate of their ends, to the vertical web 41 of the angle iron.'

At the outer end of the levers 43 are lix- Vtures 45 having a transverse central slot in the upper opening thereof, whereby upwardly extending spaced ears are formed, between which are pivotally received the ends of the levers 43. The fixtures 45 have a downwardly extending pin 46v which is providedl with a tapered end designed to enter a corresponding opening in the mold members 15 and 16.

Alined openings are provided in the horizontal web 42 of the angle iron and the strip 39, to provide a guideway for the reciprocation of the pin 46, so that movement of the tapered end of the pin into'the opening in the mold members may both tend to properly position the mold .membersjand to lock them from further movement.

A lever 47 is provided with a laterally extending pivot 48 designed to be ksomewhat loosely received in openings in the Vadjacent ends of the levers 43 and to extend to position adjacent to the horizontal web 42 of the angle iron. The last described en d ofthe lever is provided with a rounded edge or cam surface 49, which is designed to coact with the web 42, so that rotation of the vm old members.

'porting the pallet beneath lever on the pivot 4S 'will tend to raise the adjacent ends of the levers 43y to thereby push thevouter ends downwardly, which will force the pins 46 into the openings in Vthe A pin 50 is secured tothe vertical web 41 Y of the angle' iron, inthe pathy of the lower end of the lever '47, so thatmovement of the lever 47 to the right from the position shown in Fig. will cause the lower end of the lever contact with the-pin 50 to there- Vbylower theinner ends of the levers to raise the pins 46 out of the mold Vmembers.V

The parts just described are made'- to fit closely enough so thatitlie friction'al `enz` gagenient the variousjpins `and levers Vvis suflicient to hold the outer ends vof the levers 43 lin theirl raised position when thel lever 47 'swung to the right. l

l provide the following means for 'supthe mold inemtween their tops bers `and'ffor moving the pallet to inclined position to permit ready removal of the stave and pallet from the machine.

Secured to the vrear transverse frame -member 11 by mea-ns of bolts 51 is a bracket 52l having elongated slots l"53 therein, de-

signed to vreceive the bolts 51 and to -thereby permit vertical adjustment of the position-of the bracket.

Extending from the bracket 52 is a lug 54 having an opening `'therein through which is extended a horizontal bolt 55 designed to pivotally support a forwardly extending angle iron 56. A second angle iron 57 is similarly supported by lthe transverse fra-me member 11 in position alined horizontally with the angle iron v56 and spaced therefrom. Y

For supporting'the'forward ends of the angle'irons 56'and 57, and for swinging them from horizontal to inclined position, I provide the following means.

A shaft 58 is pivoted between the front frame members 1() substantially .midway beand bottoms, and anupwardly extendingl vlever 59 is? secured thereto. Adjacent to the upper `tiansverse frame member 11 a resilient'latch device 60 isdesigned to coa'ct with the lever 59 to holdit in one of its adjusted positions.

-A pair of toggle levers are extended between the' angle irons 56Y and Vand the shaft 58. The lower lever of the toggle Vlevers comprises a strap 61fixedto ythev shaft 53' and extending upwardly`r therefrom and provided with a transverse opening at "its portion, designed v,to receive an upwardly extending bolt 64.'

' The boltA 64 maybe adjustedrelative `the member 63 by means vof nuts 65 which are disposed atveither side ofthe cross 'portion of the vmember 63. The upper portion ofthe bolt 64v is provided withanl eye designed to receive a bolt-66 which is extended ythrough-thc vertical web of the angle irons 56 and fi' to tli'erebylforin a'pivotalconnec-r 'tion' between the upper toggle members and the angleirons.

From the construction of ther parts justy described yit will be seen that rotation 'of .the roci; sliaft'58 by means of the lever59 will cause the toggle levers 61 and 63 to Ysmove;from the position in" which tlieviare alined vertically, as -s'howrr` in Fig. :tov the position fin which-they a're'shownby the v`dottedjline's1in l1i'g.r2.-. f

It 'w.ill"be notedthat the.v toggle levers, when their pivots, comprising the rock shaft i 58, the/bolt 62 andthe bolt 66, are-dined -..vertically, support the angle irons 56 and 57 Y there is little or no .danger of the strips 'for making the cement in their `horizontal position orin Vposition stave.

It will thus be seen thatthe supporting and operating means for the angle irons 56 and 57 offer the greatest resistance to a downward blow on the pallets supported by heavy.

In order to overcome thisdiiiiculty I provide similarly arranged toggle levers com- Y prising a lower member 67, and upper U- angle irons 56 and ble strip 70 extended across the bottom of is bent upwardly atits outer ends Vand se-Y f cured in any suitable way to the cross brace shaped member 68, and an adjustable bolt 69 similar in its arrangement to the bolt 6ft. The last described toggle levers 'are disposed directly beneath the central portion of the pallet when the pallet is in position for orminga stave,'and extend from the 57 to a somewhat flexithe machine frame. The last-described strip Vll.'V Upwardlyfextending ears 71 secured Y' to the plate V70 support bolts 7 2 which form the'pivct for the lower ends of the toggle members 67. l

In order to operate the last described toggle'members a link 7 3 is' pivotedV at one end to the bolt 62 and to a bolt 7 l mounted in the members 68. On account of the variation in the radiiV of the arcs upon which the central pivots .of the two pairs of levers travel, due to the dilerence ijn the length oi the levers, very 'slight play is 'providedl Y in the openings in the links 73, to compeni described it will be seen that movement ofV sate for the variations in the distance vrbetween the bolts 7 4 and62 Yduring the movement of the two pairs of toggle levers.V 'Y

From the construction of the parts just the lever 59, together with the corresponding movement of the front toggle levers, si-

. multaneously operates the rear togglelevers Vof metal bent by'means of the link 73.

A Mounted on the .angle irons 57is aQpallet stop A7 5,1comprisinga single strip v j yfrupon itself at 76 toA formV 4guidesY adapted to coperate with 'bolts 77 in the horizontal A-webs of the angle irons fto'permitrthe stop 7 5V to be adjusted longitudinally relative toV the angle! irons. vAt

one end ofthe stopity is bentat 78 to form ever,

holding -tion, inv order a stop to prevent longitudinal movement of the pallet member when resting upon the angle irons. .Y

y In this connection it' will be noted that when the machine is used for making staves a comparatively large number of wooden pallets are sawed out of lumber of uniform thickness, and each stave made is formed on one of these pallets.

lormed the angle irons areV moved tothe position shown in dotted lines n Figp2,

' After the-stave is so that the pallet, together with the'stave,

may be readily slid off from the angle irons onto a truck or cart or any other convenient means :tor moving the staves to position where they may be stored.

Y For this reason it is desirable to havethe stop 75 made adjustable in order that pali let members may be readily positionedl to bring the stave .as near the center of the pallet a's is possible.

are not lusually furnished with the machine by the manufacturer, so that different men using these machines may make their pallets 'out oi' lumber of different thicknesses Yso that adjustment of the relative verticalV position of the angle ironsv must be, provided for in Vorder that the staves Vmade may 'be of uniform thickness even though the thickness of the pallet blocks Vmay vary. .i

857- Pallet members, how- From the description of the` parts heretoi' I fore mentioned, -it will -b'e seen Athat the@ brackets 52 maybe adjusted' vertically `on the frame members l1, which will vary the rela-jV tive vertical position of the rear angle irons 56 and 57. The bolts G4 and69 are also arranged s0 that movement of the nuts thereon` will vary the length of theupper toggle member to thereby vary the relative vertical Ypositionotthe forward ends of `the angle irons@ 1 n Y In theV practical operation Yor my 1m-V proved machine, it will be seen-'that means.

are provided for insuring staves or' uniformy size, and that the parts are so arranged as to` require the leastpossible adjustment.

Means are also provided so that the stavesV Y madeVv by thickness even though atamper is used to.4 pack the concrete orcement in the molds. i 7 In this connection Vit will Vbe noted that IV have provided two independent lmeans forV the mold Vmembers which Jform the ends Vand sides of the |stave, from separatil'l during the stave Yforming operationfandp the machine willbe or' uniform have providedva direct connection betweexrV theA frame parts 'to buckle-under .the .Strain 0f the tairlpng operation.' i i `the pallet'supporting-frame and the'ffoundato minimizeanytendency for j .1:

Some changes maybepmade-VinV tliejconstruction and arrangementof Vthe variouss';`

parts of my improved cement 'stave machine Without departing from the essential spirit and purpose of my invention, and it is my intention to cover by my claims any modistaves, means for moving the said mold.

members to position for forming the stave, and to position out of engagement with the formed stave, a pallet holding member, means for pivoting Asaid member '-to. the frame to permit said member to be moved selectively to horizontal position whereby a pallet thereon may coact with the mold members to form a stave, and to permit the ready removal of the pallet and stave,` and means for supporting said member in horizontal position, adapted to form a rigid connection between the foundation on which the frame may rest and a portion of said member below the mold members. y

2. In a machine for making concrete staves, comprising a foundation, a frame, and mold members mounted on the frame for forming the sides and ends of the staves, and movable selectively to position for forming the staves and to position to permit removing the staves, a pallet supporting platform, means for pivotally supporting the rear end of the platform on the Vframe, means for moving the platform selectively tolhorizontal position and to inclined position, and means for forming a rigid connection between the foundation and the platform when the latter is in horizontal position.

3. In a machine for making concrete staves, comprising a foundation, la frame,

and mold members mounted on the frame for forming the sides andends of the staves, and movable selectively to position for forming the staves and to position to pei"- mit removing the staves, a pallet supporting platform, vertically adjustable means for pivotally supporting the rear end of the platform on the frame, means for moving the platform selectively to horizontal position and to inclined position, and means for forming a rigid connection between the foundation andthe platform when the latter is in horizontal position.

4. In a machine for making concrete staves, comprising a foundation, a frame, and mold members mounted on. the frame for forming the sides and'ends of the staves, and movable selectively -to position for forming the staves and to position to permit removing the staves, a pallet supporting platform, vertically adjustable means for pivotally supporting the rear end of the platform on the frame, vertically adjustable means for moving the platform selectively to horizontal position and to inclined position, 'and means for forming a rigid connection between the foundation and the platform when the latter is in horizontall position.

5,'In a machine-for making concrete staves, comprising a foundation, a `frame',

and mold members mounted on the frame for forming thesides and ends of-the staves, and movable p selectively to position for forming the staves and to position to permit removing the staves, a pallet' supporting platform, means for pivotally supporting the rear end of the, platform on the frame,` means for moving the platform selectively to horizontal position and to inclined position, a strip of somewhat flexible material extended across the frame and vadapted toi rest on the foundation, and adjustable ,snpporting means extended between the strip and the platform adjacent to the mold members, adapted when in one position to form a rigid support between the foundation andV the platform.v n

6. (In, a machine for.` making concrete staves, comprising a` foundation, a frame,

and mold members mounted on the frame for forming the sides and ends of the staves,

and movable selectivelyV yto position forforming the staves and to position to lpermit removing the staves, a pallet supporting platform, means for pivotally supporting the rear end of the platform on the frame, means for moving the platform selectively tovhorizontal positionv and to inclined position,.and means carried by the frame for forming a rigid connection between the foundation and the platform when rthe latter is in horizontal position. p 7. In af machine for making concrete staves, comprising aY foundation, a frame, and lmold members .mounted -on the frame for forming the sides and ends of the staves, and movable selectively to position for forming the staves and to position to permit removing the staves, a-pallet supporting platform, means for pivotally supporting the rear end of the platform on the frame, means for moving the platform selec.- tively to horizontal position and to inclined position, a strip of somewhat flexible Amaterial extended across the frame and adapted torest on the foundation, toggle levers extended between said strip and the vplatform, and means for moving the levers into alinement when the platform isin horizontal position.v f 8. In a cement stave machine, Ya foundation, a substantially rectangular frame, mold members slidably mounted on the top thereof, adapted `to form the sides and ends of the stave, means for selectively. moving said members to position to form the staves iio and to position to permit the formed staves of said supporting members in horizontal alinement to the rear upper portion of the frame, a pair of toggle levers mounted ad- ]a'cent to the front portion of the frame Vand operatively connected With the front endsV of said supporting members to move the latter` from horizontal to inclined position, the Vparts being so arranged,tliat the levers have their vpivot axes in alinement When the supporting` members are horizontal, means for mounting a pallet on said supporting members, a somewhat flexible strip of niaterial extended acrossV the bottom of the frame and adapted to rest on the foundation, a second pair ofV similarly arranged toggle levers having one end pivoted to said strip and the other end operatively connected and means for simultaneously operating both pairs of toggle levers. y Y

9. In a cement stave machine,fa foundation, a substantially rectangular frame, mold members, slida'bly mounted on theV top thereof, adapted to form the sides and ends of the stave, means for selectively moving said members to position to form the staves and to position to permit the formed staves to be removed from the machine, a pair of spaced, parallel, rigid pallet supporting members, means for pivotingthe rear ends of said supporting rmembers in horizontal alinement to the rear upper portion of the frame, a pair of toggle levers mounted adjacent to the front portion of the frame and operatively connected withV the front ends of said supporting members to move the latter from horizontal to inclined position, the parts being'so arranged that the leversV have their pivot axes in alinement when the supporting members'are mounting a pallet on said supporting members, extended across the bottom of the frame and adapted to rest on the foundation, a second pair of similarly arranged toggle levers having one end pivoted to said stripl and the other end operatively connected With said supportingmembers, and means for simultaneously operating both pairs of toggle levers. l Y 10. In a cement stave machine, a founda- V tion, Va substantially rectangular frame,

mold members slidably mounted on the top thereof, adapted to form the sides and ends of the stave, means for selectively moving said members to position to formthe staves and to position to permit the formed staves to beV removed from the machine, independent means for locking said members from movement relative to the frame When in po- With said supportingmembers,

horizontal, means for y a somewhat flexible strip of material sition for forming vthe stave, pallet sup, Y, i

portingplatform, a pallet stop, means for' adjusting the position ofthe stop on-v the Y platform, vvertically adjustable means for pivoting the platform to theupper rear portion of the frame, anda pair of toggle levers Y mounted adjacentto the front portion of the frame and operatively connected to the platform to move the latter to horizontal kand in-l clined position, the parts being so arranged that the axes of the pivots of therlevers lie 1 Vent means for locking-said members fromV movement relative to the frame. When` in position for for'ming the stave, a pallet Supl porting platform, vertically adjustable means for pivoting the platform toV theu'pper rear portion of the frame, anda pair of' toggle levers mounted adjacent, to the front portion of the frame and operatively con nected to the platform to move thelatter to horizontal and inclined position, thel parts being so arranged that the axes of thev pivots of the levers lie in the same plane when the platform is in horizontal position. Y'

l2. In acement stave machine,'a foundal tion, Y av substantially rectangular frame, mold members lslfidably mounted on the' top thereof', adapted to form the'sides and ends of the stave,l means for selectively-moving said members to position to'form the staves and to position topermit the formed staves to be removed fromthe machine, independ-y ent means for locking said members fromV movement relative to the frame'when in 'po sition forforming the stave, af'pallet su l porting platform, -means for pivoting tilde platform` tothe upper rear portion of the frame, and apair of toggle levers mounted adjacent to the front portion of the frameY and operatively connected to Vthe, platform to move the latter to horizontal and inclined position, the parts being Vso arranged that the axes of the pivots ofthe levers'liefin Vrn the same plane when the platform is in horiy zontal position.

13. Ina cement stave machine,'la founda-k tion, a Asubstantially rectangular frame, mold members slidably mounted on'the top thereof, adapted to form the sides and ends of the stave, means for selectively .moving said members to positionv torform the staves and to position to permit the formed staves to be removed from the machine', independent means Vfor loclringsaid membersffrom y movement relative to the frame'when 1n po- "i :a-raves.

einen for forming the Stava @allet SUP porting platform, vertically adjustable means for pivoting the platform to the upper rear portion of the frame, a pair of toggle levers mounted adjacent to the front portion .of the frame and operatively connected to the platform to move the latter to horizontal and inclined position, the parts being so arranged that the axes of the pivots of the levers lie in the same plane when the platform is in horizontal position, and means for adjustingA the operative connection of the levers to the platform to vary the relative vertical position of the platform in any of the positions of the levers.

la. Ina cement stave machine, a foundation, a substantially rectangular frame, mold members slidably mounted on the top thereof, adapted to form the sides and ends of the stave, means for selectively moving said members to position to form the staves and to position to permitthe `formed staves to be removed from the machine, independent means for locking said members from movement relative to the frame when in p0- sition for forming the stave, a-pallet supporting platform, means for moving said platform to selectively horizontal and to 1nclined position, and yielding means. for securing said last described means to the frame, whereby said. last described means may form a rigid'brace between the foundation and the platform.

l5. In cement stave machine comprising a frame, and a pallet platform adjacent to the upper portion thereof, adapted to be moved selectively to inclined and horizontal position to respectively discharge and form the stave, a pair of spaced parallel transverse mold members adapted to form the sides of the stave, mounted on the top of the frame and adapted to slide freely in horizontal planes, mold members adapted to form the ends of the staves extended from each of said memberstoward the other, and a pair of spaced parallel levers pivoted midway between the side mold members to the frame, and having each end pivoted to one of said mold members, whereby pivotal movement of said levers may move the mold members toward and from each other.

i6. In a cement stave machine comprising a frame, and a pallet platform adjacent to the upper portion thereof, adapted to be moved selectively to inclined and horizontal position to respectively discharge and form the stave, a pair of spaced parallel transverse mold members adapted to form the sides of the stave, mounted on the top of the frame and adapted to slide freely in horizontal planes, mold members adapted to form the ends of the staves extended from each of said members toward the other, a pair of spaced parallel levers pivoted midway between the side mold members to the frameancl having slots at each end thereof, a pin extendedv from Lsaid mold members through each of said slots, and guide Idevices adapted tov positively cause the mold members to move in parallel lines for a predetermined distance when the levers are op-` erated to move the mold members toward and from each other. l

17. In a cement stave machine comprising a frame, and a pallet platformadjacent to the upper portion thereof adapted to be moved selectively lto inclined and horizontal position to respectively discharge and form the stave, a pair of` spaced parallel transverse mold members adapted to form the sides of the stave, mounted on the top of the frame and adapted to. slide freely in horizontal planes, mold members adapted to form lthe ends of the staves extended from each of said members toward the other, a pair of spaced parallel levers pivoted midway between the side mold members to the frame and having slots atv each end thereof, a pin extended from said mold members through each of saidn slots, cam faces formed on said mold members, Yrollers mounted on the frame,`and means for yieldingly holding the cam faces in Contact with the rollers, the parts being so arranged 'that pivotal movement of the levers moves the mold members a predetermined distance in parallel lines when the latter are adjacent to position for forming a stave, and selectively toward and from each other-during :the balance of the movement of the levers.

18. In a cement stave machine comprisingfr a frame, and a pallet platform adjacent to the upper portion thereof, adaptedv to be moved selectively to inclined and horizontalv position to respectively discharge and form the stave, a pair of spaced parallel transverse mold members adapted to form the sides of the stave, mounted on the top of the frame and adapted to slide freely in horizontal planes, mold members adapted to form the ends of the staves extended from each of said members toward the other, means for moving the mold members toward and from each other, and positive means for moving said` mold members in parallel lines when they arel spaced apart a predetermined distance.

19. In a cement stave machine comprising a frame, and a pallet platform adjacent to the upper portion thereof, adapted to be moved selectively to inclined and horizontal position to respectively discharge and form the stave, a pair of spaced parallel transverse members in parallel lines when they are spaced apart a predetermined distance, and independent means `for locking said mold members in position for forming the staves.

20. ln a cement stave machine comprising a frame, and a pallet platform adjacent to the upper portion thereof, adapted to be moved selectively to inclined and horizontal position to Vrespectively discharge and form the stave, a pair of spaced parallel transverse mold members adapted vto form the sides ofthe stave, mounted on the top of the frame and adapted to slide freely in horizontal planes, mold members adapted to form the ends of the staves extended from each of said members toward the other, a

pair of spaced parallel levers pivoted midway between the side mold members to the frame and having slots at each end thereof, a pin extended from said mold members through each of said slots, cam faces formed on saidmold members, rollers mountedl on the frame, means for'yieldinglyliolding the cam facesV in contact with the rollers,l the parts being so arrangedthat pivotal movement of the levers moves the mold members a predetermined distance 'in parallel lines When the latter are adjacent to position for Vforming a stave, and selectively toward and from each other during the balance of the movement of the levers, locking devices mounted on the frame, and means for bringing said locking devices into engagement with the mold members to bring said members into position for forming a stave and to hold said members from movement Vrela- Y f tive to each other.

2l. In a cement stave machine comprising- Y a frame and a pallet supporting platformv adjacent to the upper portion thereof,'adapted to be moved selectively to inclined Vand horizontal position to respectively discharge and ,Y

form a stave, a

zontal plane, said members-having spaced pair of spaced parallel mold members adapted to form the sides ofthe i stave and mounted to slide freely in a hori-V openings therein, mold membersA adapted to i form the ends of the stave extended fronrV each of the first describedmembers towardv Y theother, means for moving said side members toward and from each other, said lastV described meansV being also adapted to move said members in parallel lines during a por# tion of their movement, strips secured to' the frame adjacent to the mold members and having openings therein adapted to register with the openings inthe mold members when the latter are in position ,to form a stave,

sIGURD E. ANDERSON. 

